Zn-P Co-Modified Hierarchical ZSM-5 Zeolites Directly Synthesized via Dry Gel Conversion for Enhanced Methanol to Aromatics Reaction

A unique method to prepare Zn-P co-modified hierarchical ZSM-5 zeolites was developed. The ZSM-5 zeolite was directly synthesized by a dry gel conversion without adding any templates or seeds. Afterwards, the hierarchical structure was endowed to the ZSM-5 zeolite by the sequential desilication-deal...

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Autores principales:	Youhe Wang, Zhihong Li, Chang Dai, Ningning Du, Tingting Li, Risheng Wang, Peng Peng, Hongman Sun
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	methanol to aromatics hierarchical ZSM-5 dry gel conversion Zn-P co-modified Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/46ba08e04bf5452381c0beb107dcd42d
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spelling	oai:doaj.org-article:46ba08e04bf5452381c0beb107dcd42d2021-11-25T17:06:39ZZn-P Co-Modified Hierarchical ZSM-5 Zeolites Directly Synthesized via Dry Gel Conversion for Enhanced Methanol to Aromatics Reaction10.3390/catal111113882073-4344https://doaj.org/article/46ba08e04bf5452381c0beb107dcd42d2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4344/11/11/1388https://doaj.org/toc/2073-4344A unique method to prepare Zn-P co-modified hierarchical ZSM-5 zeolites was developed. The ZSM-5 zeolite was directly synthesized by a dry gel conversion without adding any templates or seeds. Afterwards, the hierarchical structure was endowed to the ZSM-5 zeolite by the sequential desilication-dealumination. Zn and P species were then introduced into the hierarchical ZSM-5 zeolites by the impregnation method and their activity in methanol to aromatics process was investigated. It was found that the Zn-P co-modified hierarchical ZSM-5 zeolites possessed more Zn-related Lewis acid sites, and the ratio of Zn(OH)<sup>+</sup>/ZnO was increased. The catalytic evaluation results revealed that the benzene, toluene and xylene (BTX) and aromatics selectivity were significantly improved from 20.59% and 29.41% of pristine ZSM-5 zeolite to 28.12% and 41.88% of Zn-P co-modified hierarchical counterpart (1.5Zn0.3P/HZSM-5), respectively. Owing to the introduced highly stable Zn-P co-modified hierarchical structures, the lifetime (conversion not less than 99%) of ZSM-5 zeolite during methanol to aromatics reaction was increased from 6 h to 18 h.Youhe WangZhihong LiChang DaiNingning DuTingting LiRisheng WangPeng PengHongman SunMDPI AGarticlemethanol to aromaticshierarchical ZSM-5dry gel conversionZn-P co-modifiedChemical technologyTP1-1185ChemistryQD1-999ENCatalysts, Vol 11, Iss 1388, p 1388 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	methanol to aromatics hierarchical ZSM-5 dry gel conversion Zn-P co-modified Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	methanol to aromatics hierarchical ZSM-5 dry gel conversion Zn-P co-modified Chemical technology TP1-1185 Chemistry QD1-999 Youhe Wang Zhihong Li Chang Dai Ningning Du Tingting Li Risheng Wang Peng Peng Hongman Sun Zn-P Co-Modified Hierarchical ZSM-5 Zeolites Directly Synthesized via Dry Gel Conversion for Enhanced Methanol to Aromatics Reaction
description	A unique method to prepare Zn-P co-modified hierarchical ZSM-5 zeolites was developed. The ZSM-5 zeolite was directly synthesized by a dry gel conversion without adding any templates or seeds. Afterwards, the hierarchical structure was endowed to the ZSM-5 zeolite by the sequential desilication-dealumination. Zn and P species were then introduced into the hierarchical ZSM-5 zeolites by the impregnation method and their activity in methanol to aromatics process was investigated. It was found that the Zn-P co-modified hierarchical ZSM-5 zeolites possessed more Zn-related Lewis acid sites, and the ratio of Zn(OH)<sup>+</sup>/ZnO was increased. The catalytic evaluation results revealed that the benzene, toluene and xylene (BTX) and aromatics selectivity were significantly improved from 20.59% and 29.41% of pristine ZSM-5 zeolite to 28.12% and 41.88% of Zn-P co-modified hierarchical counterpart (1.5Zn0.3P/HZSM-5), respectively. Owing to the introduced highly stable Zn-P co-modified hierarchical structures, the lifetime (conversion not less than 99%) of ZSM-5 zeolite during methanol to aromatics reaction was increased from 6 h to 18 h.
format	article
author	Youhe Wang Zhihong Li Chang Dai Ningning Du Tingting Li Risheng Wang Peng Peng Hongman Sun
author_facet	Youhe Wang Zhihong Li Chang Dai Ningning Du Tingting Li Risheng Wang Peng Peng Hongman Sun
author_sort	Youhe Wang
title	Zn-P Co-Modified Hierarchical ZSM-5 Zeolites Directly Synthesized via Dry Gel Conversion for Enhanced Methanol to Aromatics Reaction
title_short	Zn-P Co-Modified Hierarchical ZSM-5 Zeolites Directly Synthesized via Dry Gel Conversion for Enhanced Methanol to Aromatics Reaction
title_full	Zn-P Co-Modified Hierarchical ZSM-5 Zeolites Directly Synthesized via Dry Gel Conversion for Enhanced Methanol to Aromatics Reaction
title_fullStr	Zn-P Co-Modified Hierarchical ZSM-5 Zeolites Directly Synthesized via Dry Gel Conversion for Enhanced Methanol to Aromatics Reaction
title_full_unstemmed	Zn-P Co-Modified Hierarchical ZSM-5 Zeolites Directly Synthesized via Dry Gel Conversion for Enhanced Methanol to Aromatics Reaction
title_sort	zn-p co-modified hierarchical zsm-5 zeolites directly synthesized via dry gel conversion for enhanced methanol to aromatics reaction
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/46ba08e04bf5452381c0beb107dcd42d
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Zn-P Co-Modified Hierarchical ZSM-5 Zeolites Directly Synthesized via Dry Gel Conversion for Enhanced Methanol to Aromatics Reaction

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